21051283

素因数分解:

${\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{229}}^1$

素因数の和:438

約数の個数: 16

約数和(自身を含む): 23614560

約数和(自身を除く): 2563277

約数列:

[1, 11, 61, 137, 229, 671, 1507, 2519, 8357, 13969, 31373, 91927, 153659, 345103, 1913753, 21051283]

約数ペア:

[(1, 21051283), (11, 1913753), (61, 345103), (137, 153659), (229, 91927), (671, 31373), (1507, 13969), (2519, 8357)]